The system allows you to enter up to two tariff rates and one standing charge (also known as network charge). 

To enter tariff/s select [More Menu] button in the app. Next select [Energy] and [Electricity tariff]. Here you can enter the tariff rate/s and standing charge.

A minimum of one tariff rate is needed. 

If you are entering two tariffs (i.e. day and night), then the first tariff must be the day rate and the second will need to be your night rate.

With the second tariff rate you will need to enter the start and end time for this also.